From 60013b94d9530346db963474f7fde8aecabaff25 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Sun, 22 Sep 2013 21:49:18 +0200 Subject: mfd: Add STw481x driver This adds a driver for the STw481x PMICs found in the Nomadik family of platforms. This one uses pure device tree probing. Print some of the OTP registers on boot and register a regulator MFD child. Signed-off-by: Linus Walleij Signed-off-by: Lee Jones --- include/linux/mfd/stw481x.h | 56 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 56 insertions(+) create mode 100644 include/linux/mfd/stw481x.h (limited to 'include/linux/mfd') diff --git a/include/linux/mfd/stw481x.h b/include/linux/mfd/stw481x.h new file mode 100644 index 000000000000..eda121556e5d --- /dev/null +++ b/include/linux/mfd/stw481x.h @@ -0,0 +1,56 @@ +/* + * Copyright (C) 2011 ST-Ericsson SA + * Written on behalf of Linaro for ST-Ericsson + * + * Author: Linus Walleij + * + * License terms: GNU General Public License (GPL) version 2 + */ +#ifndef MFD_STW481X_H +#define MFD_STW481X_H + +#include +#include +#include +#include + +/* These registers are accessed from more than one driver */ +#define STW_CONF1 0x11U +#define STW_CONF1_PDN_VMMC 0x01U +#define STW_CONF1_VMMC_MASK 0x0eU +#define STW_CONF1_VMMC_1_8V 0x02U +#define STW_CONF1_VMMC_2_85V 0x04U +#define STW_CONF1_VMMC_3V 0x06U +#define STW_CONF1_VMMC_1_85V 0x08U +#define STW_CONF1_VMMC_2_6V 0x0aU +#define STW_CONF1_VMMC_2_7V 0x0cU +#define STW_CONF1_VMMC_3_3V 0x0eU +#define STW_CONF1_MMC_LS_STATUS 0x10U +#define STW_PCTL_REG_LO 0x1eU +#define STW_PCTL_REG_HI 0x1fU +#define STW_CONF1_V_MONITORING 0x20U +#define STW_CONF1_IT_WARN 0x40U +#define STW_CONF1_PDN_VAUX 0x80U +#define STW_CONF2 0x20U +#define STW_CONF2_MASK_TWARN 0x01U +#define STW_CONF2_VMMC_EXT 0x02U +#define STW_CONF2_MASK_IT_WAKE_UP 0x04U +#define STW_CONF2_GPO1 0x08U +#define STW_CONF2_GPO2 0x10U +#define STW_VCORE_SLEEP 0x21U + +/** + * struct stw481x - state holder for the Stw481x drivers + * @mutex: mutex to serialize I2C accesses + * @i2c_client: corresponding I2C client + * @regulator: regulator device for regulator children + * @map: regmap handle to access device registers + */ +struct stw481x { + struct mutex lock; + struct i2c_client *client; + struct regulator_dev *vmmc_regulator; + struct regmap *map; +}; + +#endif -- cgit v1.2.3